<template>
    <div>
        <!--面包屑导航-->
       <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>数据统计</el-breadcrumb-item>
            <el-breadcrumb-item>数据报表</el-breadcrumb-item>
        </el-breadcrumb>

        <!--卡片-->
        <el-card>
            <!--2.为echarts准备一个具备大小（宽高）的dom-->
            <div id="main" style="width: 600px;height:400px;"></div>
        </el-card>
    </div>
</template>

<script>
// 1.导入 echarts
import echarts from 'echarts'
import _ from 'lodash'

export default {
    data(){
        return{
            //需要合并的数据
         options:{
            title: {
                text: '用户来源'
            },
            tooltip: {},
            legend: {
                data:['销量']
            },
            xAxis: {
                data: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
            },
            yAxis: {},
            series: [{
                name: '销量',
                type: 'bar',
                data: [5, 20, 36, 10, 10, 20]
            }]
        }
        }
    },
    created(){

    },
    //此时页面上的元素，已经被渲染完毕了
    async mounted(){
        // 3.基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'))

        const {data:res} = await this.$http.get('reports/type/1')
        if(res.meta.status !==200){
            return this.$message.error('获取折线图数据失败')
        }
        // 4.准备数据和配置项
       const result = _.merge(res.data, this.options)

        // 5.展示数据
        myChart.setOption(result)
    }
}
</script>

<style lang="less" scoped>

</style>